dist/ntp/kernel/sys/pcl720.h

   1 /*      $NetBSD$        */
   2
   3 /* Copyright (c) 1995 Vixie Enterprises
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies, and that
   8  * the name of Vixie Enterprises not be used in advertising or publicity
   9  * pertaining to distribution of the document or software without specific,
  10  * written prior permission.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS" AND VIXIE ENTERPRISES DISCLAIMS ALL
  13  * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
  14  * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL VIXIE ENTERPRISES
  15  * BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
  16  * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  17  * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
  18  * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
  19  * SOFTWARE.
  20  */
  21
  22 #ifndef _PCL720_DEFINED
  23 #define _PCL720_DEFINED
  24
  25 #define pcl720_data(base,bit)   (base+(bit>>3))
  26 #define pcl720_data_0_7(base)   (base+0)
  27 #define pcl720_data_8_15(base)  (base+1)
  28 #define pcl720_data_16_23(base) (base+2)
  29 #define pcl720_data_24_31(base) (base+3)
  30 #define pcl720_cntr(base,cntr)  (base+4+cntr)   /* cntr: 0..2 */
  31 #define pcl720_cntr_0(base)     (base+4)
  32 #define pcl720_cntr_1(base)     (base+5)
  33 #define pcl720_cntr_2(base)     (base+6)
  34 #define pcl720_ctrl(base)       (base+7)
  35
  36 #ifndef DEBUG_PCL720
  37 #define pcl720_inb(x)           inb(x)
  38 #define pcl720_outb(x,y)        outb(x,y)
  39 #else
  40 static unsigned char pcl720_inb(int addr) {
  41         unsigned char x = inb(addr);
  42         fprintf(DEBUG_PCL720, "inb(0x%x) -> 0x%x\n", addr, x);
  43         return (x);
  44 }
  45 static void pcl720_outb(int addr, unsigned char x) {
  46         outb(addr, x);
  47         fprintf(DEBUG_PCL720, "outb(0x%x, 0x%x)\n", addr, x);
  48 }
  49 #endif
  50
  51 #define pcl720_load(Base,Cntr,Mode,Val) \
  52         ({      register unsigned int   b = Base, c = Cntr, v = Val; \
  53                 i8253_ctrl ctrl; \
  54                 \
  55                 ctrl.s.bcd = i8253_binary; \
  56                 ctrl.s.mode = Mode; \
  57                 ctrl.s.rl = i8253_lmb; \
  58                 ctrl.s.cntr = c; \
  59                 pcl720_outb(pcl720_ctrl(b), ctrl.i); \
  60                 pcl720_outb(pcl720_cntr(b,c), v); \
  61                 pcl720_outb(pcl720_cntr(b,c), v >> 8); \
  62                 v; \
  63         })
  64
  65 #define pcl720_read(Base,Cntr) \
  66         ({      register unsigned int   b = Base, v; \
  67                 i8253_ctrl ctrl; \
  68                 \
  69                 ctrl.s.rl = i8253_latch; \
  70                 ctrl.s.cntr = i8253_cntr_0; \
  71                 pcl720_outb(pcl720_ctrl(b), ctrl.i); \
  72                 v = pcl720_inb(pcl720_cntr_0(b)); \
  73                 v |= (pcl720_inb(pcl720_cntr_0(b)) << 8); \
  74                 v; \
  75         })
  76
  77 #define pcl720_input(Base) \
  78         ({      register unsigned int   b = Base, v; \
  79                 \
  80                 v = pcl720_inb(pcl720_data_0_7(b)); \
  81                 v |= (pcl720_inb(pcl720_data_8_15(b)) << 8); \
  82                 v |= (pcl720_inb(pcl720_data_16_23(b)) << 16); \
  83                 v |= (pcl720_inb(pcl720_data_24_31(b)) << 24); \
  84                 v; \
  85         })
  86
  87 #define pcl720_output(Base,Value) \
  88         ({      register unsigned int   b = Base, v = Value; \
  89                 \
  90                 pcl720_outb(pcl720_data_0_7(b), v); \
  91                 pcl720_outb(pcl720_data_8_15(b), v << 8); \
  92                 pcl720_outb(pcl720_data_16_23(b), v << 16); \
  93                 pcl720_outb(pcl720_data_24_31(b), v << 24); \
  94                 v; \
  95         })
  96
  97 #endif /*_PCL720_DEFINED*/